Effects of different irrigation amounts on soil structure in newly cultivated land on the Loess Plateau
Fig 5
Thermal map of correlation between tomato root morphology and soil structure index.
Note: MR0.25 is the mass fraction of soil macro aggregates, MWD is the mean weight diameter, GMD is the geometric mean diameter, BD is the average bulk density of the soil, PD is the soil particle density, TP is the total porosity of the soil, XS is the soil solid phase volume fraction, XL is the soil liquid phase volume fraction, XG is the soil gaseous phase volume fraction, STPSD is the soil three-phase structure distance, GSSI is the generalized soil structure index, RL is the root length, RS is the root surface area, RD is the root diameter, RV is the root volume, RDW is the root dry weight, θr is the average soil moisture content within 0-60 cm depth during the whole growth season.